See how quickly a business pays its suppliers. Enter cost of goods sold or credit purchases and accounts payable to get the AP turnover ratio and days payable outstanding (DPO), compare them with your supplier terms, and see how much cash a few days' change would free up.
Last updated:
Turnover based on
Period figures
$
$
Total bought from suppliers on account.
$
$
365 for a year (some use 360), 90 for a quarter.
Accounts payable
$
Optional. Leave empty to use ending AP.
$
days
e.g. 30 for net 30.
Enter your values to see the result.
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How to use the Accounts Payable Turnover Calculator
Pick the basis: COGS (most common for outside analysis), actual credit purchases, or purchases derived from COGS and inventory.
Enter the period figures and the number of days the period covers.
Enter accounts payable at the end of the period, and at the start for an average.
Optionally enter your supplier terms (e.g. 30 for net 30) to see if you pay early or late.
Press Calculate AP turnover to see the ratio, DPO, the formula steps and the cash-effect table.
AP turnover and DPO formulas
AP turnover = Purchases (or COGS) ÷ Average accounts payable
Example with the default figures: COGS of $2,400,000 and accounts payable of $180,000 at the start and $220,000 at the end (average $200,000) give an AP turnover of 12.0× and a DPO of 365 ÷ 12 = 30.4 days, almost exactly on net-30 terms. Each day of DPO is worth about $6,575 of cash (COGS ÷ 365).
Turnover and DPO at a glance (365-day year)
AP turnover
DPO
Typical meaning
24×
15.2 days
Paying on net-15 terms or taking early-payment discounts
12×
30.4 days
Paying on net-30 terms
8×
45.6 days
Net-45 terms, or stretching net-30 terms
6×
60.8 days
Net-60 terms, common with large buyers
4×
91.3 days
Long negotiated terms or payment difficulties
Tips for managing payables
Compare DPO with your terms, not with an abstract target: a 45-day DPO is fine on net-45 terms and a warning sign on net-15.
Do the discount math: early-payment discounts such as 2/10 net 30 are usually worth more than the cash you would keep by waiting.
Watch the trend: a DPO that climbs quarter after quarter while sales are flat can mean the business is using suppliers as a source of financing.
Mind seasonality: year-end payables may be unusually high or low; averaging beginning and ending balances, or using quarterly averages, gives a fairer figure.
Frequently asked questions
What is the accounts payable turnover formula?
AP turnover = total supplier purchases ÷ average accounts payable, where average AP = (beginning AP + ending AP) ÷ 2. Because purchases are rarely disclosed, analysts often use cost of goods sold instead. A turnover of 12 means the company paid off its average payables balance 12 times in the year.
How do I calculate days payable outstanding (DPO)?
DPO = days in the period ÷ AP turnover, or equivalently average AP ÷ purchases (or COGS) × days. With a turnover of 12 over a 365-day year, DPO is about 30.4 days, meaning bills are paid roughly a month after they arrive.
Should I use COGS or purchases?
Purchases are the more accurate numerator, since payables arise from buying goods and services on credit. If you only have the income statement and balance sheet, estimate purchases as COGS + ending inventory − beginning inventory, or use COGS directly and apply the same choice consistently across periods and companies.
Is a high or low payables turnover better?
A high turnover (low DPO) means suppliers are paid quickly, which builds goodwill and can capture early-payment discounts but uses cash sooner. A low turnover (high DPO) conserves cash, but if it runs well beyond agreed terms it may signal cash-flow strain. The right level depends on your terms and industry.
Is it worth paying early to take a 2/10 net 30 discount?
Usually yes. Taking a 2% discount for paying 20 days early is equivalent to an annual return of about 2 ÷ 98 × 365 ÷ 20 ≈ 37%, far more than most businesses earn on idle cash or pay on a credit line.
How does DPO fit into the cash conversion cycle?
Cash conversion cycle = days inventory outstanding + days sales outstanding − days payable outstanding. A longer DPO shortens the cycle, meaning less cash is tied up in working capital between paying suppliers and collecting from customers.
Are all the tools on FreeToolCabin tested for quality and accuracy?
Yes! Every tool on our site undergoes automated Q/A testing in real browser environments to ensure high precision, correct output, and zero errors. If you happen to spot a bug or have a suggestion, please contact us at [email protected] and our team will review it right away.